TC7662AEPA Datasheet PDF - Microchip Technology
| Part Number | TC7662AEPA | |
| Description | CHARGE PUMP DC-TO-DC CONVERTER | |
| Manufacturers | Microchip Technology | |
| Logo |  |
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EVALUATION
KIT
AVAILABLE
TC7662A
CHARGE PUMP DC-TO-DC CONVERTER
FEATURES
s Wide Operating Range ............................. 3V to 18V
s Increased Output Current .............................. 40mA
s Pin Compatible with ICL7662/SI7661/TC7660/
LTC1044
s No External Diodes Required
s Low Output Impedance @ IL = 20mA ....... 40Ω Typ.
s No Low-Voltage Terminal Required
s CMOS Construction
ORDERING INFORMATION
Part No.
TC7662ACPA
TC7662AEPA
TC7662AIJA
TC7662AMJA
Package
8-Pin Plastic DIP
8-Pin Plastic DIP
8-Pin CerDIP
8-Pin CerDIP
Temperature
Range
0°C to +70°C
– 40°C to +85°C
– 25°C to +85°C
– 55°C to +125°C
GENERAL DESCRIPTION
The TC7662A is a pin-compatible upgrade to the In-
dustry standard TC7660 charge pump voltage converter. It
converts a +3V to +18V input to a corresponding –3V to
–18V output using only two low-cost capacitors, eliminating
inductors and their associated cost, size and EMI. In addi-
tion to a wider power supply input range (3V to 18V versus
1.5V to 10V for the TC7660), the TC7662A can source
output currents as high as 40mA. The on-board oscillator
operates at a nominal frequency of 12kHz. Operation be-
low 10kHz (for lower supply current applications) is also
possible by connecting an external capacitor from OSC to
ground.
The TC7662A directly is recommended for designs
requiring greater output current and/or lower input/output
voltage drop. It is available in 8-pin PDIP, and CerDIP
packages in commercial and extended temperature ranges.
PIN CONFIGURATION
PDIP/CerDIP
NC 1
C+ 2
8 VDD
7 OSC
GND 3 TC7662A 6 NC
C– 4
5 VOUT
FUNCTIONAL BLOCK DIAGRAM
NC = NO INTERNAL CONNECTION
COSC 7
I
Q
+ F/F
C
–Q
COMPARATOR
WITH HYSTERESIS
VREF
LEVEL
SHIFT
LEVEL
SHIFT
8 VDD
TC7662A
P SW1
2 CAP+
N SW4
+
CP
EXT
GND
3
LEVEL
SHIFT
LEVEL
SHIFT
N SW2
+
OUT
CR
EXT
4 CAP–
RL
N SW3
5
VOUT
© 2001 Microchip Technology Inc. DS21468
TC7662A-5 9/11/96
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CHARGE PUMP DC-TO-DC CONVERTER
TYPICAL CHARACTERISTICS CURVES
Supply Current vs Temperature
700
600
500
400 V + = 15V
300
200 V+ = 5V
100
0
–60 –40 –20
0 20 40 60 80 100 120 140
TEMPERATURE (°C)
Frequency vs Temperature
20
18
16
14
12
10
8
6
–60 –40 –20
0 20 40 60 80 100 120 140
TEMPERATURE (°C)
TC7662A
Oscillator Frequency vs CEXT
TA = +25°C
10k
1k
100
10
1
10
100
1000
10,000
CAPACITANCE (pF)
Output Resistance vs Temperature
160
140
120 V += 5V, IL = 3 mA
100
80
60
40 V+ = 15V, IL = 20 mA
20
–60 –40 –20
0 20 40 60 80 100 120 140
TEMPERATURE (°C)
Power Conversion Efficiency vs ILOAD
110 165
100 150
90
80 EFFICIENCY
135
120
70 105
60 90
50
SUPPLY
75
40
CURRENT
60
30 45
20 30
10 TA = +25°C 15
0
0 8 16 24 32 40 48 56 64 72 80
LOAD CURRENT (mA)
© 2001 Microchip Technology Inc. DS21468
5
Output Resistance vs Input Voltage
110
100 TA = +25°C
90
80
70
60 20 mA
50
40
30
20
10
0 2 4 6 8 10 12 14 16 18 20
INPUT VOLTAGE (V)
TC7662A-5 9/11/96
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for TC7662AEPA electronic component. |
| Information | Total 7 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ TC7662AEPA.PDF Datasheet ] | |
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| TC7662AEPA | The function is CHARGE PUMP DC-TO-DC CONVERTER. Microchip Technology | |
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